SAGA E450 frame

Hi friends,
I recently bought this frame which looks very well done. Simple to assemble and compatible with many Tarot accessories. My concern is about the inclination of the arms upwards. Comesi sees in the drawing. Could it be a problem for the operation of the quadrocopter? Do motors need to be horizontal? Or can they also be inclined as long as the inclination is the same for all four motors?
Thank’s to all

Doesn’t make much difference, it’s a quite common design decision and won’t cause problems.

Hi friend,
I also thought that the fundamental thing was that all four engines had the same inclination towards the center of gravity.
Thank’s @james_pattison